Constraining Galileon Inflation
arXiv:1411.4501 · doi:10.1088/1475-7516/2015/02/015
Abstract
In this short paper, we present constraints on the Galileon inflationary model from the CMB bispectrum. We employ a principal-component analysis of the independent degrees of freedom constrained by data and apply this to the WMAP 9-year data to constrain the free parameters of the model. A simple Bayesian comparison establishes that support for the Galileon model from bispectrum data is at best weak.
11 pages. Matches published version